diff --git a/src/Extension/UrlExtension.php b/src/Extension/UrlExtension.php
index 694bff9..d9cbc7d 100644
--- a/src/Extension/UrlExtension.php
+++ b/src/Extension/UrlExtension.php
@@ -126,7 +126,7 @@ PATTERN;
     # src: https://stackoverflow.com/a/14550919
     public static function slug(string $text, string $separator = '-') : string
     {
-        $clean = iconv('UTF-8', 'ASCII//TRANSLIT', $text);
+        $clean = iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', $text);
         $clean = preg_replace("/[^a-zA-Z0-9\/_| -]/", '', $clean);
 
         return preg_replace("/[\/_| -]+/", $separator, strtolower(trim($clean, '-')));